According to the report, extracting a ZIP file no longer shows the dialog box for if you want to replace files that are named the same as the ones being extracted. Instead, the file extraction either overwrites your files or fails without saying anything.

Microsoft has been working to fix the October 2018 Update, releasing cumulative updates to the Slow and Release Preview rings. Presumably, all of this could have avoided if the firm had just used the Release Preview ring before it initially rolled out the update, as that's what the ring is there for. Some users might have been hoping that Microsoft re-releases the update this Tuesday, although that now seems somewhat unlikely.